<%@ page isErrorPage="true" %>
<%@ taglib uri="http://example.org/custom-functions" prefix="custom" %>
<!DOCTYPE html>
<html>
<head>
    <title>Error Page</title>
</head>
<body>
<h1>Error Occurred</h1>
<p>Exception Class: ${custom:getClassName(requestScope.exception)}</p>
<p>Exception Message: ${requestScope.exception.message}</p>
</body>
</html>